490 results about "Top drive" patented technology

The embodiment of the invention provides an underground tool face dynamic control method and system based on reinforcement learning, and belongs to the technical field of directional drilling. The method comprises the steps of collecting drilling state data of a target well, performing data preprocessing on the drilling state data, and constructing a corresponding state vector based on the preprocessed drilling state data; calling an action decision model obtained by training based on a DDPG algorithm based on the state vector to obtain an action instruction; wherein the network strategy parameter of the action decision model is obtained by correcting the previous network strategy parameter based on the deviation between the current drilling state data and a pre-constructed reward function; analyzing the action instruction to determine a target physical action; and executing top drive torsional pendulum based on the target physical action, and recycling an execution result until the execution result indicates that the tool face angle meets the expectation. According to the scheme, the stability and the real-time control effect under the working conditions of complex well sections and severe disturbance are improved.

The invention relates to the technical field of cables, and discloses a power shielding cable stranding device for a top drive of an oil platform and a production process, the power shielding cable stranding device comprises a supporting assembly, the upper part of the supporting assembly is provided with a wire feeding assembly, a stranding assembly, a guide assembly and a traction assembly, and the wire feeding assembly is located at the side part of the upper part of the supporting assembly; the stranding assembly, the guiding assembly and the traction assembly are transversely arranged on the upper portion of the supporting assembly along the supporting assembly, the supporting assembly comprises a bottom plate, and a first driving motor is installed on the upper portion of the bottom plate. By arranging an adjusting plate, the problem that a stranded wire is locally bent due to improper storage and carrying or material rigidity difference can be solved. Precise correction is achieved by sensing local deformation of the stranded wire and applying extrusion and drawing force, the situation that the cross section structure of the cable is not uniform due to deflection of a bent part after stranding is avoided, the structural strength of the cable is guaranteed, electric energy loss is reduced, the power transmission efficiency is improved, and the structural stability and transmission performance of the stranded cable are guaranteed.

The invention discloses a torsion tensile testing machine which comprises a rack, a first main shaft, a coupler, a tensile driving assembly and a first torsion driving assembly, the first main shaft is connected with one end of the test piece, the test piece is installed on the rack, the coupler comprises a pulling plate and two bearings, a convex disc is arranged in the middle of the first main shaft, the two bearings are arranged on the first main shaft in a sleeving mode and located on the two sides of the convex disc respectively, and the stretching driving assembly is connected with the pulling plate. The stretching driving assembly applies an axial load to the first main shaft through the pulling plate, and the first torsion driving assembly applies a torsion load to the test piece. The tension and compression load and the torsion load from the tension driving assembly and the first torsion driving assembly are integrated to the first main shaft through the coupler, the first main shaft is utilized to apply the set static or dynamic tension and compression load and torsion load to the test pup joint at the same time, and various complex stresses borne by a drill rod of the top drive drilling machine during working are simulated. Technicians are helped to evaluate and test the performance of the short circuit more truly.

The invention relates to the field of spring fatigue testing equipment, in particular to a switch spring fatigue fault degree testing device and method.The switch spring fatigue fault degree testing device comprises a spring fatigue testing device body, the spring fatigue testing device body comprises a bottom bin, and a servo motor is arranged in the bottom bin and installed in an installation base; the servo motor is installed on one side of the middle in the bottom bin, the top driving end of the servo motor is fixedly connected with a driving gear, one side of the driving gear is in meshed connection with a gear ring, the gear ring is fixedly connected to the lower portion of the periphery of a rotating sleeve, and the rotating sleeve is fixedly connected to the middle of the bottom end of a connecting disc. According to the invention, the top arc at the tail end of the sliding rod can drive the elastic plate to deform synchronously, so that the radian of the elastic plate can be changed, people can test fatigue data of the switch spring main body under different compression coefficients, and the test data can be more comprehensive.

The invention relates to the technical field of radian detection, and discloses a glass lifter guide rail radian detection device which comprises a workbench detection assembly, an error triggering assembly and a locking assembly. In the reciprocating swing process of the overturning arm, the connecting rod at the top drives the sliding sleeve and the detection roller to detect the cambered surface of the guide rail to be detected in real time, and once the cambered surface of the guide rail to be detected does not meet the requirement, on one hand, the device can send out feedback in time, an operator can stop current detection in time, the guide rail to be detected does not need to be completely detected, and the detection efficiency is improved. The next workpiece is directly replaced for detection, so that the overall detection efficiency is further improved; and on the other hand, the detection roller can move towards the guide rail to be detected, and the original movement mark of the detection roller on the guide rail is a straight line, so that the mark at the position can be thickened, the defect position can be visually marked at a fixed point, an operator can quickly know the position of the defect, complex data backstepping and analysis are not needed, and the detection efficiency is improved.

The utility model discloses a well drilling top drive wash pipe assembly structure, which relates to the technical field of wash pipe sealing and comprises a wash pipe body, an upper connecting union connected to the upper end of the wash pipe body and a lower connecting union connected to the lower end of the wash pipe body. A packing assembly is arranged between the washing pipe body and the lower connecting union and comprises a packing base pipe, a lower end sealing seat, a plurality of sets of abrasion-resistant packing, a plurality of stages of spacer rings and an upper end sealing seat, wherein the packing base pipe is arranged on the periphery of the washing pipe body in a sleeving mode and forms a packing ring cavity, and the lower end sealing seat, the multiple sets of abrasion-resistant packing, the multiple stages of spacer rings and the upper end sealing seat are sequentially arranged in the packing ring cavity in a sleeved mode in the axial direction. The washing pipe is characterized in that a grease groove surrounding the washing pipe body is formed in the inner wall of the upper end sealing seat, and the grease groove is filled with lubricating grease. According to the utility model, the lubricating effect of the rotary seal between the washing pipe body and the packing assembly can be provided, and the friction is reduced, so that the effects of reducing the abrasion speed and prolonging the service life are achieved.

The invention relates to the field of drilling ship manufacturing, in particular to a data acquisition method and system of a driver for oil exploitation. Six-degree-of-freedom motion data of a ship motion reference unit, pressure data of a hydraulic cylinder of a marine riser tensioner, hook load data of a drill string hung by a top driving system, torque data and radial acceleration data are synchronously collected, and collected multiple paths of signals are aggregated to form synchronous multi-source vibration data flow. According to the method, multiple types of vibration, load and pressure signals are synchronously collected and aggregated and segmented under the unified time reference in the operation process of the drilling ship, so that the consistency of multi-source data on the time scale is ensured, and the real dynamic coupling relation can be reflected by subsequent calculation; in the signal processing stage, key acceleration and pressure fluctuation information are extracted, and the actual working state of the marine riser system is represented through dynamic response characteristics constructed by the peak position, the peak amplitude and the power spectral density.

A well site may include a wellbore extending into a subsurface formation and a drilling rig with a top drive and a drive shaft to rotate a drill string extending into the wellbore. The drill string includes a drill bit at an end distal to the drilling rig to cut rock of the subsurface formation to form the wellbore. Acoustic sensors may be positioned on the drive shaft, or the top drive, or the drill string. The acoustic sensors are configured to record and transmit drilling acoustic signals during a dummy drilling operation and a real drilling operation. A computer system may be in communication with the acoustic sensors. The computer system processes the drilling acoustic signals during the dummy drilling operation and the real drilling operation to minimize a drilling environmental effect by deducting a drilling environmental noise from the drilling acoustic signals to calculate clean drilling acoustic signals.

The invention relates to the technical field of top driving devices, in particular to a buffer pad and a mechanical seal wash pipe assembly.The buffer pad comprises a first buffer part and a second buffer part, and the second buffer part is arranged on the surface, corresponding to the buffer direction, of the first buffer part; the first buffering piece has an elastic state and a limit state in the process of compressing in the buffering direction; in the elastic state, the rigidity of the first buffer piece is lower than that of the second buffer piece; and in a limit state, the rigidity of the first buffer piece is higher than that of the second buffer piece. Through cooperation of the first buffer part and the second buffer part, the buffer pad has the two-stage buffer capacity, the whole buffer pad can adapt to vibration or impact under different pressures, the pressure adapting range of the buffer pad is guaranteed, and the pressure adapting range of the wash pipe is widened.

The invention discloses a mineral hydraulic lifting system and method for deep-sea mining, and relates to the technical field of deep-sea mining, the mineral hydraulic lifting system for deep-sea mining comprises a water surface supporting platform, a slurry pump set, a drill rod, a marine riser, an underwater workstation and a top driving part, the upper end of the water surface supporting platform is provided with the slurry pump set and the top driving part; one end of the drill rod is in transmission connection with the top driving part, the other end of the drill rod penetrates through the water surface supporting platform, the drill rod is sleeved with a marine riser, an annular cavity is formed between the drill rod and the marine riser, and the lower ends of the drill rod and the marine riser are connected with the underwater workstation. A power device and parts of the lifting system are arranged on the water surface, pipe fittings which are connected between the water surface supporting platform and the underwater work station and are only provided with marine risers and drill rods are convenient to control and maintain, the number of underwater equipment is reduced, high-power electrical equipment is reduced, and related power, control and accessory parts can be greatly optimized; the use risk of underwater equipment is reduced, and the reliability of the system is improved.

The system for automating well construction operations includes a plurality of sensors, such as a fingerboard latch position sensor for providing position of a fingerboard latch, a stick-up height sensor for determining a height of a portion of a tubular section extending from a well center, a pipe handler rotation sensor for detecting a position of a pipe handler, a bell guide clearance sensor for measuring a distance between a bell guide and a tool joint, a link tilt position sensor for measuring an angle of a bail with respect to a top drive, an elevator latch status sensor for detecting whether an elevator latch is open or closed, and a power slips sensor for detecting whether a power slips is open or closed. Further, the system includes a controller in communication with the plurality of sensors and configured to command one or more equipment based on inputs from the sensors.

The invention discloses a permanent magnet direct-drive top drive motor and an installation method thereof, belongs to the technical field of direct-drive permanent magnet motors, and aims to solve the technical problem of poor heat dissipation performance of a permanent magnet direct-drive top drive motor in the prior art. The motor comprises a main shaft, a stator assembly, a rotor assembly, a cooling assembly and a shell. The rotor assembly comprises a rotor core and a rotor support. The main shaft is connected with the rotor core through the rotor support. The cooling assembly comprises a draught fan, an air guide barrel connected with the output end of the draught fan and an air guide piece arranged in the shell. The air guide sheets and the inner wall of the shell form a first cooling flow channel; the shell comprises an upper end cover and a lower end cover, and a plurality of first ventilation holes are formed in the lower end cover. Cooling air is input by the draught fan, passes through the air guide barrel and the first cooling flow channel and then is output through the first ventilation hole. The permanent-magnet direct-drive top-drive motor provided by the invention is convenient to assemble, high in reliability, good in overall heat dissipation efficiency and long in service life.

The application provides a downhole hydraulic back-off tool, characterized in that the back-off tool comprises a hydraulic anchor, a hydraulic back-off device and a telescopic compensation mechanism, and the power part is composed of a driving cylinder, a driving pin, an anti-rotation cylinder, a rotating cylinder, a third spring, a central shaft, an inner ratchet mechanism, a driving shaft and an outer ratchet mechanism; the one-way left-rotation part of the hydraulic back-off device comprises the inner ratchet mechanism and a second spring, and the anti-rebound right-rotation part comprises the outer ratchet mechanism and a first spring. The application makes all the torques of the workover operation be transmitted to the fishing tool through the relative movement of the inner ratchet mechanism and the outer ratchet mechanism from the hydraulic back-off device, and the working string does not need to transmit the torque to the downhole through the surface wellhead rotary table or the top drive, the hydraulic anchor is anchored and unanchored through the pressure in the string, and the anchor provides a fulcrum function for the timely cooperation of the power torque output of the hydraulic back-off device; the telescopic compensation mechanism is used for compensating the axial displacement of the back-off tool.

The invention relates to the field of offshore oilfield development, and discloses an offshore drilling well control automation simulation system and an operation debugging method thereof.The offshore drilling well control automation simulation system is characterized in that an upper computer is connected with a PLC control box through an optical fiber, and a controller transmits a control signal to the PLC control box through the optical fiber; the PLC control box transmits information of the sensors arranged at the key connection points to the controller through optical fibers; the throttle manifold and control device is connected with the PLC control box through an optical fiber to simulate fluid flowing out of the annulus to generate a throttling effect; the blowout preventer group and the control device are connected with the PLC control box through a cable; the liquid circulation simulation device is connected with the PLC control box through a cable and simulates liquid circulation during well drilling. The gas invasion annulus simulation device is connected with the PLC control box through a cable and simulates gas invasion annulus during well drilling; the simulation top drive and the simulation winch are connected with the PLC control box through cables until the simulation drill column is located at a preset position. According to the invention, manual misoperation probability and manual operation time can be reduced, and offshore drilling well control efficiency can be improved.

A special double-lifting-ring balancing device for a top drive device relates to the field of oil exploration and comprises the top drive device, the top of the top drive device is connected with a connecting device, a gear box is arranged at the bottom of the top drive device, the connecting device is connected with the gear box through a lifting ring, and the lifting ring is movably connected with the connecting device. The lifting rings are rotationally connected with the gear box, the top drive device is lifted through the two lifting rings and is in a stable state, the stress degree of the double lifting rings is far about that of a single lifting ring, and the stability of the top drive device can be greatly improved while the top drive device is more stable.

The invention discloses an automatic hard well shut-in method and system integrated with a petroleum drilling machine control system, and relates to the technical field of petroleum drilling machine well control. According to the method, the drilling working condition is monitored in real time, an overflow trigger index is calculated, the overflow risk in a shaft is judged, and a hard well shut-in process is started after an alarm is given; the position of a hook and the position of a drill rod joint are monitored in real time, a winch safety stop index is calculated, whether the operation state of the winch is safe or not is judged, the hook is automatically moved to the optimal stop point, and the winch is braked; top drive and slurry pump linkage control is started, a top drive and slurry pump linkage control coefficient is calculated, whether the static working condition before well control is met or not is judged, and equipment is stopped or a strategy is executed accordingly; monitoring the action of the blowout preventer and the state of the hydraulic system, calculating the consistency index of the action of the blowout preventer, judging whether the action of the blowout preventer meets the well shut-in requirement or not, and giving a strategy if the action does not meet the well shut-in requirement; real-time judgment of the overflow risk and automatic hard shut-in of the well can be achieved, the safety of the well mouth is guaranteed, and the risk of manual misoperation is reduced.

The invention discloses a disassembly-free top drive drilling device pulley and guide rail system, relates to the field of petroleum drilling engineering, and solves the problems that a top drive drilling device is too long in assembly and disassembly time and too high in safety risk when applied to a telescopic derrick drilling machine. The derrick is divided into an upper derrick section and a lower derrick section; the slide rail comprises an upper slide rail section and a lower slide rail section; the upper-section sliding rail and the lower-section sliding rail are hooked through a hook; an upper-section sliding rail and a lower-section sliding rail are respectively arranged on two sides of the inner sides of the derrick upper section and the derrick lower section; two ends of the pulley are in contact with the upper-section slide rail and the lower-section slide rail; the working surfaces of the upper-section sliding rail and the lower-section sliding rail in contact with the tackle are on the same plane to form a tackle guide channel; the middle of the pulley is connected with a top drive; the top drive is hung below the traveling block and moves up and down along with the traveling block. According to the disassembly-free top drive well drilling device pulley and guide rail system, the assembly and disassembly time is saved, the danger in the assembly and disassembly process is reduced, and the well drilling efficiency and the construction quality are improved.

The utility model provides a welding wire pay-off machine. The welding wire pay-off machine comprises a bearing mechanism, a wire pay-off mechanism and a tail jacking mechanism, the wire pay-off mechanism and the tail jacking mechanism are installed on the bearing mechanism, and the wire pay-off mechanism comprises a wire pay-off tip cone assembly, a first transmission assembly fixedly connected with the wire pay-off tip cone assembly and a wire pay-off driving assembly fixedly connected with the first transmission assembly. The wire releasing driving assembly can drive the spool to rotate through the first transmission assembly and the wire releasing tip cone assembly so as to achieve automatic wire releasing. The tail top mechanism comprises a tail top tip cone piece, a second transmission assembly fixedly connected with the tail top tip cone piece and a tail top driving assembly fixedly connected with the second transmission assembly, the tail top tip cone piece is used for being connected with the spool, and the tail top driving assembly can drive the tail top tip cone piece to move back and forth in the direction where the central axis of the spool is located through the second transmission assembly. The welding wire pay-off machine is used for being matched with a large-diameter spool, the welding wire production cost can be reduced, and the welding wire production efficiency can be improved.

According to the novel rope winding and unwinding device, in the state that a rope is tightened, the seat clamping jaw can move towards the shaft side teeth under the driving of the abutting driving part of the rotary cover, the elastic jaw arm keeps the matching of the jaw teeth and the shaft side teeth through elasticity, the winding shaft main body is driven to tighten and wind the rope, the shaft side teeth abut against the jaw teeth outwards in the process, and the rope is wound. The elastic claw arms of the seat clamping claws generate outward elastic deformation by means of elasticity, the shaft side teeth slide through the claw teeth along the corresponding tooth slopes on the claw teeth, and the claw teeth fluctuate in the direction close to or away from the shaft side teeth in the continuous rotating process. The claw teeth clamp the shaft side teeth by virtue of corresponding claw clamping surfaces on the claw teeth and position the winding shaft main body; when the rope object is released, the abutting driving part does not apply pressure to the seat clamping jaw, the jaw teeth are driven by deformation recovery of the elastic jaw arms to move outwards to be separated from the shaft side teeth, and the jaw teeth do not clamp the shaft side teeth. The shaft side teeth replace a traditional cover tooth structure. Relative rotation and clamping of the winding shaft and the cover body are achieved through the second axial limiting part and the third axial limiting part.

The application provides a small semi-automatic tremella rod hole expanding machine, which comprises a main frame, a feeding mechanism, a hole expanding power mechanism, a transmission mechanism and a plurality of hole expanding mechanisms, the main frame comprises a main machine table top, a first supporting table top, a second supporting table top and a guide column, the hole expanding power mechanism, the transmission mechanism and the plurality of hole expanding mechanisms are all located on the first supporting table top, the hole expanding cylinder on the second supporting table top drives the whole first supporting table top to slide up and down along the guide column through the first push plate; the hole expanding mechanism comprises a hole expanding support, a rotating assembly and a blade, the hole expanding power mechanism drives the blade to rotate through the transmission mechanism and the rotating assembly in sequence; the feeding channel of the feeding mechanism is located below the blade, and the blade is used for expanding holes on the tremella rod on the feeding channel. The application realizes semi-automatic hole expansion of the tremella rod, and also ensures that the shape of the incision formed by hole expansion is regular and the size is stable, thereby improving the yield and quality of tremella.

The invention relates to the technical field of valve assembly equipment, in particular to a top drive plug valve for an ultrahigh pressure deep well and assembly equipment, the top drive plug valve comprises an operation table, two clamping supports and a clamping driving component, the two clamping supports are slidably mounted on the two sides of the operation table respectively, and the clamping driving component is mounted on the operation table and used for correspondingly driving the two clamping supports; the device further comprises a matching assembly. The matching assembly comprises adaptive column discs, pressing pads and connecting components, the pressing pads are fixedly installed on the adaptive column discs, and the two adaptive column discs are installed on the two clamping supports through the two sets of connecting components correspondingly, so that the plug valve can be supported and clamped more stably and rapidly through the arranged components; and a user can conveniently assemble the plug valve.

A system can include a top drive with a quill with a pivot joint, with an upper portion pivotably coupled to a lower portion via a pivot, coupled between the quill and a running tool, wherein rotation of the lower portion relative to the upper portion pivots the running tool about the pivot. A method for running a tubular string by moving a tubular along a catwalk, coupling a pivot joint between a running tool and a quill, and pivoting the running tool about the pivot by pivoting the lower portion relative to the upper portion.

According to the novel rope winding and unwinding device, when the rope is tightened, the seat clamping jaw can move towards the shaft side teeth under the driving of the abutting driving part of the rotary cover, the elastic jaw arm keeps the matching of the jaw teeth and the shaft side teeth through the elasticity, the winding shaft main body is driven to tighten and wind the rope, the shaft side teeth abut against the jaw teeth outwards in the process, and the rope is wound. The elastic claw arms of the seat clamping claws generate outward elastic deformation by means of elasticity, the shaft side teeth slide through the claw teeth along the corresponding tooth slopes on the claw teeth, and the claw teeth fluctuate in the direction close to or away from the shaft side teeth in the continuous rotating process. The claw teeth clamp the shaft side teeth by virtue of corresponding claw clamping surfaces on the claw teeth and position the winding shaft main body; when the rope object is released, the abutting driving part does not apply pressure to the seat clamping jaw, the jaw teeth are driven by deformation recovery of the elastic jaw arms to move outwards to be separated from the shaft side teeth, and the jaw teeth do not clamp the shaft side teeth. The shaft side teeth replace a traditional cover tooth structure. Relative rotation and clamping of the winding shaft and the cover body are achieved through the second axial limiting part and the third axial limiting part.

A tackle special for a top drive device comprises a vertical rail A and a vertical rail B. The vertical rail A and the vertical rail B are connected with each other, and relates to the field of oil exploration, a sliding device is arranged on the vertical rail A, the vertical rail A and the vertical rail B are in sliding connection, the sliding device and the top drive device are connected, the sliding device and the top drive device are fixedly connected, and the sliding device comprises a vertical frame and a transverse frame. The left end and the right end of the transverse frame are each connected with a set of vertical frames, the vertical frames are perpendicular to the transverse frame, the vertical frames are connected with the vertical rails B in a sliding mode, meanwhile, the vertical frames are further connected with the top drive device in a fixed mode, and the transverse frame is connected with the two sets of vertical frames to form a buckled state. The top drive device can be perfectly buckled to the vertical rail A or the vertical rail B through the locking device, meanwhile, the vertical rail A or the vertical rail B is locked through the guiding device, the vertical guiding function of the top drive device can be achieved, the locking function can be achieved, the top drive device is prevented from falling off, the service life of the top drive device is longer, and meanwhile use is safer.

A system including an instrumented sub for supporting subterranean operations, the instrumented sub can include an upper and lower portion with a flow passage extending therethrough, and a valve that selectively permits or restricts fluid flow through the flow passage, and a rotary interface coupled to the upper portion and including a rotary portion and a stationary portion, where the rotary portion is rotationally fixed to the upper portion and rotates with the upper portion, where the stationary portion is rotationally coupled to the rotary portion, and where the rotary interface transfers communication signals between the stationary portion and the rotary portion to transmit commands or data to or receive the commands or data from one or more components of the instrumented sub. Can also include a method of using the instrumented sub to determine a vertical position or movement of a top drive.

The invention discloses production, welding and processing equipment for police handcuffs, and relates to the technical field of police handcuff welding. The device comprises a machining table, a lead screw linear sliding rail module is arranged in the machining table, a clamping table top is fixedly mounted at the top of a sliding block of the lead screw linear sliding rail module, and swivel clamping mold assemblies are fixedly mounted at the two ends of the top of the clamping table top correspondingly; a vertical positioning assembly and a horizontal positioning assembly are slidably connected to the top of the clamping table top, a mounting ring is rotationally arranged in the machining table and can rotate forwards and backwards, and a spot welding gun is fixedly mounted on the outer side of the mounting ring. The position of the spot welding gun can be adjusted through rotation of the mounting ring, the spot welding gun can be aligned to connectors of two chain rings, then the clamping table top is driven to linearly move through the lead screw linear sliding rail module, the clamping table top drives a chain to move, then the connectors of the two chain rings can be automatically welded, the welding precision is high, and the welding efficiency is high.

The utility model provides a well drilling top drive conductive wire passing and internal blowout prevention function integrated pup joint which comprises an internal blowout preventer, a rotor of a conductive slip ring is fixedly connected to the middle of the internal blowout preventer through a key, a stator of the conductive slip ring is connected with the rotor of the conductive slip ring in a matched mode, and a rotor output end is installed at the outer end of the rotor of the conductive slip ring. A stator input end and a stator fixing block are installed at the outer end of a stator of the conductive slip ring, the stator input end is connected with a stator output cable, and a rotor output end is connected with a cable in a small hole in the protection connector through a rotor output cable. The device is convenient to use, the cable can pass through a drilling top drive, and the device has an internal blowout prevention function.

The utility model provides special auxiliary equipment for mounting a saddle linear rail of a machine tool, which relates to the technical field of machine tool manufacturing and comprises a tool body (1), a base (2), a worktable (4), a rotary table sliding plate (6), a rotary table (7), a stand column (9), a drilling spindle box (14), a tapping spindle box (15) and a spindle box body (16). Each of the drilling spindle box (14) and the tapping spindle box (15) comprises a spindle box body (16), a gear (17), a moving shaft (18) and a cutter (19), and a rotating motor (20) at the top drives the gear (17) to drive the moving shaft (18) and the cutter (19) to rotate; the thread drilling and tapping efficiency is greatly improved, the stress concentration problem generated by machining is effectively eliminated and relieved, and the stability and reliability of a whole machine tool system are improved.

The invention relates to a lifting ring tilting device and a top drive drilling system, the lifting ring tilting device comprises a rotating head, a fixing assembly, an oil cylinder assembly and two lifting rings, the two lifting rings are oppositely installed on the two sides of the rotating head, and the upper ends of the two lifting rings are rotationally connected with the rotating head; the fixing assembly is fixedly installed on the rotating head, and the oil cylinder assembly is fixedly installed on the fixing assembly, rotationally connected with the two lifting rings through the inclining assembly and used for driving the two lifting rings to incline. The tilting device has the beneficial effects that the structure is compact, the design is reasonable, the lifting capacity of the tilting device can be improved, and the problem that the boundary dimension of an existing tilting device is increased along with the increase of the bearing capacity is effectively solved.

The invention provides U-shaped bending test equipment and method for a top drive cable, and the equipment comprises a winding and unwinding system which is used for winding and unwinding a steel wire rope, the output end of the winding and unwinding system is connected with the steel wire rope, and the winding and unwinding system is arranged on a floor at any height of a building; the top of the test rack is provided with a first guide wheel, the steel wire rope bypasses the first guide wheel and is connected with a lifting plate, the lifting plate is connected with the A end of the cable through a first connecting piece to drive the A end to move up and down in the Z direction, and the B end of the cable is fixed to the test rack through a second connecting piece; when the end A moves up and down, the cable is U-shaped. According to the invention, the U-shaped bending test of a cable with a long moving distance and a large outer diameter can be completed.